Safety lock for gas-stove valves



. Oct. 9, 1928.

'L. FABA SAFETY LOCK FOR GAS STOVE VALVES Filed Sept. 1926 \w I a R. V m. E m a m V \O T mmi M 1 0 .Y. B

Patented Oct. 9, 1928..

UNITED STATES nure: FABA, or Dn'rnorr, M CHIGAN.

'sArE'rY LOCK FOR GAS-STOVE vALvns.

Applicationfiled September 7, 1926:. 'Ser1 a1'No:"133,965 8 My invention relates to a new and useful imlock for gas stove provement in a safety, valves, and has for its ob e :t the provision of a lock which may be mounted on. a gas stove. locking the valve in.

valve, and adapted for either open. closed or partially open position,

. so that a child will beprevcnt-ed from mavention.

nipulating the valve for controlling the flow of gas to the stove. y 8 Another object of the invention is the provision of a safety device of this class which will be simple in structure, cconon'iical of manufactuieand highly eiiicientin use.

Another object of the invention is the pro- I visionin a device of this class'oi a locking puncher adapted for being retracted by a rocking spring held arm.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings which form a part of this invention and in which,

Fig. 1 is a side elevational view oftlie invention. V

Fig. 2 is a rear elevational View of the in- Fig. 3 tially line 3 .3- of Fig. 1.

Fig. 4 is a fragmentary sectional view taken of substantially line 4-4; of Fig. 3, showing the valve in closed position, and,

Fig. 5 is a sectional view similar to Fig; 4 showing the valve in open position.

As shown in the drawings, the invention is adapted for mounting on a valve used for controlling the flow of gas to gas stove, and the like, and I have shown the invention applied to the usual structure of stop cock used in this connection. The casing 9 has its upper edge cut away as at (10), and there is mounted in the casing 9 the tapered plug 11, having a vent opening 12 projecting therethrough, and embraced at one end by a spring 13 which engages a washer 14 held in position by the screw 15, so that the plug is normally held in snug relation to the casing 9.. The plug 11 is provided with the usual "operating handle 16.

The plug 11 is cut away as at'lZ toprovide a recess in which may be engaged an arm 19 which is pivotally mounted and the recess 17 intermediate its end, and provided at one end with a head 19. Engaging one end of the arm 1y extending 18 is one end of a coil spring 19' which is positioned ina recess 21 formed in the outwardly projecting portion of the plugll. Pivotally.

mounted to the other end of the arm 18 is a pin- 22 which is adaptedin response toth'e-pressure oftho spring 20 to project through an open-'- ing 23 which is formed in the "plug 511.

Formed in the'casing 9 are/spaced radially extending openings 23 and 24, the opening 23.- being so positioned thatwhen the pin 22 is.

engaged therein the plug 11 will be so turned. that the valve willbe fully open. The opening 2 1- is so positioned that when the pin 22 en-- gages therein the plug. 11 will be so turned that the valvcwill be partially opened. Pros;

'iecting diametrically outwardly frointhe plug 11 is a pin2'5, this pin 25 being adapted to engage one end of the cut away portion 10 when the pin 22 is in engagement with the opening 1 28. When the plug 11 is so turned that the pin 22. engages in the cut away portion 10, as shown in Fig. 4, the pin 25 will. engage the opposite end ofthe cut away portion 10. In

this position the valve is fully closed, and in order toop'en the valve it is necessary that the arm 18 be rocked on its pivot against the tension of the spring 20. Similarly inorder to move the valve from a positionin which the I "pin 22 is in engagement with either the openis a sectional v ew taken of substan-g ing 23 or 24, it will be necessary to rock the arm 18 on its pivot so as to retract the pin 22.

It is thus seen that I have provided a safety device which is simple in structure and which may be easily and quickly operated by a person knowing that the rock'ng of the arm 18 is preferred form of structure I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as come within the I scope of the appended claims.

Having thus described my invention what I claim asnew and desire to secure by Letters Patent is:

1. A stop cock of the class described comprising: a shell having a plurality ofradialjacent one end thereof and provided with a recess .in said end, the base of said recess openings formed therein adlying in the same plane as the base ofsaid plug to predetermined positions,

openings; 'a plug rotatably mounted in said shell, said plug having a radially extending opening formed therein, said opening being adapted for registering with theopenings formed in said shell upon rotation of said said plug having a longitudinally extending recess formed adjacent one end communicating at its outer end With a transversely extending pocket; a coil spring positioned in said pocket; a rocker arm pivota-lly mounted'in said longitudinally extending recess and engaging at one 'end the outer end of said spring; a locking pin pivotally connected to the other end of said rockerarin and engaging 1n the opening formed in said plug, and adapted for PIOJGClZlIlg lnto the openings formed in said shell upon registering of the opening formed in said ings in saidshell. V

2. A stop cock of the class described, comprising: a shell having a plurality of radially extending openings formed therein adjacent one end thereof and provided With a recess in said end, the'loase of said recess lying plug With said openforegoing.

in the same plane as the base of said openings;

a plug rotatahly mounted in said shell, said 7 arm pivotally mounted intermediate its ends in said longitudinally extending recess and outwardly offset toward one end, said out; Wardly ofiset end engaging the outer end of said spring; a locking pin piyotally connected. to the other end of said rocker arm and engaging in the opening formed in d plug, and adapted for projecting'into the openings formed in saidshell upon registering of the opening formed in said plug With said open ings in said -shell. I

In testimonywhereor" I have signed the LUIGI MBA. 

